Portion of a golf club head



FIG. 1 is a perspective view of a portion of a golf club head, embodying the inventive design;

FIG. 2 is a perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a back elevational view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a side elevational view thereof.

The broken lines represent the bounds of the claimed design and environmental elements only; the broken lines form no part of the claimed design. In another embodiment, the inventive design is the mirror image of that shown. 

The ornamental design for a portion of a golf club head, as shown and described. 